1456e6c370
It causes this line not to work: https://searchfox.org/mozilla-central/rev/cb5faf5dd5176494302068c553da97b4d08aa339/testing/mochitest/tests/SimpleTest/EventUtils.js#3254 And is just not needed. In fact in most of these it was just unused. Differential Revision: https://phabricator.services.mozilla.com/D220727